Move a DECLARE_ALIGNED_16 variable in the Nellymoser encoder from the stack

into the context to avoid issues when stack variables can not be aligned
reliably.

Originally committed as revision 18940 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/nellymoserenc.c

@@ -54,6 +54,7 @@ typedef struct NellyMoserEncodeContext {
     DSPContext      dsp;
     MDCTContext     mdct_ctx;
     DECLARE_ALIGNED_16(float, mdct_out[NELLY_SAMPLES]);
+    DECLARE_ALIGNED_16(float, in_buff[NELLY_SAMPLES]);
     DECLARE_ALIGNED_16(float, buf[2][3 * NELLY_BUF_LEN]);     ///< sample buffer
     float           (*opt )[NELLY_BANDS];
     uint8_t         (*path)[NELLY_BANDS];
@@ -111,13 +112,11 @@ static const uint8_t quant_lut_offset[8] = { 0, 0, 1, 4, 11, 32, 81, 230 };
 
 void apply_mdct(NellyMoserEncodeContext *s)
 {
-    DECLARE_ALIGNED_16(float, in_buff[NELLY_SAMPLES]);
-
-    memcpy(in_buff, s->buf[s->bufsel], NELLY_BUF_LEN * sizeof(float));
-    s->dsp.vector_fmul(in_buff, ff_sine_128, NELLY_BUF_LEN);
-    s->dsp.vector_fmul_reverse(in_buff + NELLY_BUF_LEN, s->buf[s->bufsel] + NELLY_BUF_LEN, ff_sine_128,
+    memcpy(s->in_buff, s->buf[s->bufsel], NELLY_BUF_LEN * sizeof(float));
+    s->dsp.vector_fmul(s->in_buff, ff_sine_128, NELLY_BUF_LEN);
+    s->dsp.vector_fmul_reverse(s->in_buff + NELLY_BUF_LEN, s->buf[s->bufsel] + NELLY_BUF_LEN, ff_sine_128,
                                NELLY_BUF_LEN);
-    ff_mdct_calc(&s->mdct_ctx, s->mdct_out, in_buff);
+    ff_mdct_calc(&s->mdct_ctx, s->mdct_out, s->in_buff);
 
     s->dsp.vector_fmul(s->buf[s->bufsel] + NELLY_BUF_LEN, ff_sine_128, NELLY_BUF_LEN);
     s->dsp.vector_fmul_reverse(s->buf[s->bufsel] + 2 * NELLY_BUF_LEN, s->buf[1 - s->bufsel], ff_sine_128,